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Weather & Climate in Unión Buena Vista, Mexico

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Unión Buena Vista has a warm climate with an average annual temperature of 80°F (27°C). Winters average 76°F in January while summers reach 81°F in July / relatively mild seasonal variation. The area gets 361 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 25.3 inches (drier than the 38-inch national average). The city sits at an elevation of 1,749 feet.

Temperature

76°F Jan (25°C) 81°F Jul (27°C)
Annual Average80.0°F
48% above US avg
January Average76°F (25°C)
July Average81°F (27°C)
Sunny Days361 days/yr

Geography

Elevation1,749 ft (533 m)
Area157.6 sq mi (408.1 km²)
Population Density12/sq mi
Coordinates16.4858°N, 92.8182°W
TimezoneAmerica/Mexico_City

Precipitation & Snow

Annual Rainfall 25.3"
33% below US avg
Snowfall 0.0"
Wettest Month (Sep) 9.41"
Driest Month (Jan) 0.16"

Air Quality

Earthquake History

800 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.2.

Oct 21, 1995 13 km NW of Ocozocoautla de Espinosa, Mexico M7.2 80 km 159 km
Mar 14, 1994 6 km ENE of Rizo de Oro, Mexico M6.9 69 km 164 km
Dec 31, 1996 4 km SW of El Ramal (Porvenir), Mexico M6.4 75 km 100 km
Jan 16, 2002 2 km SW of Las Brisas, Mexico M6.4 115 km 80 km
Nov 28, 2001 2 km ESE of El Carmen, Mexico M6.4 106 km 85 km
Jun 7, 1998 2 km NNE of Cabeza de Toro, Mexico M6.3 118 km 87 km
Jul 6, 2007 6 km N of Lázaro Cárdenas, Mexico M6.1 126 km 113 km
Jan 19, 2001 6 km NNE of Hidalgo, Mexico M6.0 121 km 93 km
Aug 9, 2023 7 km NNE of Tonalá, Mexico M5.8 104 km 103 km
May 5, 2025 5 km NNE of Nuevo León, Mexico M5.8 29 km 261 km
Jan 17, 2009 5 km NNW of Nueva Colombia, Mexico M5.8 83 km 169 km
Oct 17, 2000 4 km ENE of Nuevo Amatenango, Mexico M5.8 134 km 181 km
Feb 1, 2003 7 km NNW of Nuevo Vicente Guerrero (El Chichonal), Mexico M5.8 11 km 211 km
Aug 5, 2015 11 km ENE of Tonalá, Mexico M5.7 98 km 101 km
May 20, 2017 21 km SE of La Horqueta (Poblado Doce), Mexico M5.7 149 km 144 km
Jan 9, 2001 7 km NE of Nuevo Milenio Valdivia, Mexico M5.6 104 km 92 km
Sep 1, 2012 11 km N of Plan de Agua Prieta, Mexico M5.5 29 km 257 km
Jan 12, 2015 18 km W of El Palmarcito, Mexico M5.5 127 km 75 km
Aug 12, 2019 7 km NE of Cabeza de Toro, Mexico M5.5 112 km 93 km
Jun 7, 2009 5 km SW of Emiliano Zapata, Mexico M5.4 65 km 140 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Hurricane History

1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.

Year Name Category Max Wind Closest
2013 Barbara Category 1 81 mph 120 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 50.0 m (164 ft).

Year Location Cause Max Wave Deaths Distance
2007 JUAN DE GRIJALVA, CHIAPAS Meteorological 50.0 m 19 50 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Chichon, El (107 km).

Name Type Elevation Last Eruption Distance
Chichon, El Lava dome(s) 1,150 m (3,773 ft) 1982 107 km
Tacana Stratovolcano 4,064 m (13,333 ft) 1986 169 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 76°F (25°C) 0.2 in Driest
February 74°F (23°C) 0.2 in
March 78°F (26°C) 0.4 in
April 82°F (28°C) 1.1 in
May 82°F (28°C) 4.1 in Warmest
June 80°F (27°C) 9.4 in
July 81°F (27°C) 7.5 in
August 78°F (26°C) 8.2 in
September 78°F (25°C) 9.4 in Wettest
October 76°F (25°C) 3.8 in
November 75°F (24°C) 1.1 in
December 73°F (23°C) 0.3 in Coldest

Unión Buena Vista has a seasonal temperature swing of 10°F / from 73°F in December to 82°F in May. Total annual precipitation is 45.5 inches, with September being the wettest month (9.4") and January the driest (0.2").

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